Changed parsing for config file to accept configurable location of openstackwatch.ini file.

Change-Id: I93771b0abeff2908a586132c58c20fa21a62855b
Reviewed-on: https://review.openstack.org/24225
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Elizabeth Krumbach <lyz@princessleia.com>
Approved: Monty Taylor <mordred@inaugust.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Tested-by: Jenkins

jeepyb/cmd/openstackwatch.py

@@ -15,7 +15,8 @@
 
 # This script is designed to generate rss feeds for subscription from updates
 # to various gerrit tracked projects. It is intended to be run periodically,
-# for example hourly via cron.
+# for example hourly via cron. It takes an optional argument to specify the
+# path to a configuration file.
 # -*- encoding: utf-8 -*-
 __author__ = "Chmouel Boudjnah <chmouel@chmouel.com>"
 import json
@@ -73,7 +74,11 @@ def parse_ini(inifile):
                                     OUTPUT_MODE)
     return ret
 
-CONFIG = parse_ini(os.path.join(curdir, '..', 'config', 'openstackwatch.ini'))
+try:
+    conffile = sys.argv[1]
+except IndexError:
+    conffile = os.path.join(curdir, '..', 'config', 'openstackwatch.ini')
+CONFIG = parse_ini(conffile)
 
 
 def debug(msg):